Rock Mechanics & Reservoir Laboratory
Spring 2010
Lab Session No.5
Absolute Permeability Using a Gas
Table of Contents
1.0 Abstract ……………………………………………2
2.0 Equipments used ………………………………………2-3
3.0 Test Procedures ……………………………………...3-5
4.0 Results ………………………………………………….5-7
5.0 Discussions………………………………………………8
6.0 Conclusion and Recommendations……………….…..8
7.0 Questions and answers…………………………………8-9
8.0 References……………………………………………...9
Appendices
1.0 Abstract
The purpose of this session is to demonstrate the concept of a single phase gas flow through a porous media. The method that used in this lab is the nitrogen gas (Reslab digital gas permeameter). In addition, the gas flow expressed by the Darcy’s equation which relates volumetric flow and pressure drop with the properties of the fluid and media.
The permeability is the production capacity of hydrocarbon reservoirs because it measure of how a reservoir fluid moves through the interconnected rock pores. It is usually measured at a confining pressure of about 300 to 400 psi on both horizontal and vertical core plugs. Permeability information play a role in determining where in the reservoir production tests should be performed.
In this report we are going to show the result that we obtained from the experiment as well as the discussion. Then on the conclusion the result will be given with a suggested recommendations. The key result is that the gas permeability is close to each other in both methods by equation and slope. A and C samples are sandstone, for this reason their permeability’s are within 100 and 1000 md. Moreover, their permeability’s are within 50 and 250 which prove that the quality of the permeability’s is good.
2.0 Equipments used
In this experiment